JPH01230705A - Manufacture of reinforced fiber-contained aluminum alloy powder - Google Patents
Manufacture of reinforced fiber-contained aluminum alloy powderInfo
- Publication number
- JPH01230705A JPH01230705A JP5660188A JP5660188A JPH01230705A JP H01230705 A JPH01230705 A JP H01230705A JP 5660188 A JP5660188 A JP 5660188A JP 5660188 A JP5660188 A JP 5660188A JP H01230705 A JPH01230705 A JP H01230705A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- molten
- powder
- alloy powder
- reinforced fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000843 powder Substances 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 25
- 239000000835 fiber Substances 0.000 claims abstract description 21
- 239000000919 ceramic Substances 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 239000012783 reinforcing fiber Substances 0.000 claims description 38
- 229910045601 alloy Inorganic materials 0.000 abstract description 45
- 239000000956 alloy Substances 0.000 abstract description 45
- 238000000034 method Methods 0.000 abstract description 18
- 238000003756 stirring Methods 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910001132 Ar alloy Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011812 mixed powder Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 229910001020 Au alloy Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009689 gas atomisation Methods 0.000 description 2
- 239000003353 gold alloy Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 238000007712 rapid solidification Methods 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910017818 Cu—Mg Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、繊維強化アルミニウム(AQ)合金の製造に
用、いる強化繊維含有A2合金粉末の製造方法に関する
。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing A2 alloy powder containing reinforcing fibers, which is used for producing fiber-reinforced aluminum (AQ) alloys.
金属の靭性や延性等を利用しながら、強度の改善や伸び
量の減少等を図る目的で、金属母材中にセラミックスの
強化繊維を分散させる試みがなされ、軽量で低融点のA
!又はAe金合金中心に幾つかの繊維強化金属(FRM
)が提案されている。In order to improve strength and reduce elongation while taking advantage of the toughness and ductility of metals, attempts have been made to disperse ceramic reinforcing fibers into the metal matrix, resulting in lightweight and low melting point A.
! Or some fiber reinforced metals (FRM) centered on Ae gold alloy
) has been proposed.
この繊維強化金属の製造方法としては、(1) l!合
金粉末とウィスカ又は短繊維のような強化繊維を混合し
、焼結するか又は押出する方法、及び(2)強化繊維を
固めたビレットにA2合金の溶湯を高圧で注入浸透させ
る方法が知られている。The method for manufacturing this fiber-reinforced metal includes (1) l! A method of mixing alloy powder and reinforcing fibers such as whiskers or short fibers and sintering or extruding the mixture, and (2) a method of injecting and permeating molten A2 alloy at high pressure into a billet containing hardened reinforcing fibers are known. ing.
しかし、(1)の方法では強化繊維を均一に分散させる
ことが困難であり、また焼結性が低下して空隙が多くな
り緻密なものが得難かった。アセトン等の溶媒中でA2
合金粉末と強化繊維を混合すれば均一な分散が得られる
が、焼結性は改善されないうえ工程が複雑でコスト高と
なる。また(2)の方法では急速凝固が不可能であるた
め、lの高合金を使用できないほか、セラミックスの強
化繊維とAR合金溶湯の濡れ性に問題があり、強固な接
合が得難かった。However, in the method (1), it is difficult to uniformly disperse the reinforcing fibers, and the sinterability is decreased, resulting in a large number of voids, making it difficult to obtain a dense product. A2 in a solvent such as acetone
Although uniform dispersion can be obtained by mixing alloy powder and reinforcing fibers, sinterability is not improved and the process is complicated and costs are high. In addition, since rapid solidification is not possible in method (2), a high alloy of 1 cannot be used, and there is a problem in the wettability of the ceramic reinforcing fibers and the molten AR alloy, making it difficult to obtain a strong bond.
この様に繊維強化金属にはまだ多くの問題があるだめ、
実用化に至っていない現状である。As you can see, there are still many problems with fiber-reinforced metals.
At present, it has not been put into practical use.
本発明者らは上記した繊維強化金属の問題点を克服し、
強化繊維が均一に分散していて緻密であり、優れた強度
を有する繊維強化A[合金を提供するため検討を重ねた
結果、従来のA2合金粉末と強化繊維を混合する考えを
改め、1合金粉末中に予め強化繊維を含有させることを
着想した。The present inventors have overcome the above-mentioned problems of fiber-reinforced metals,
As a result of repeated studies in order to provide a fiber-reinforced A [alloy with reinforced fibers that are uniformly dispersed, dense, and have excellent strength, we changed the conventional idea of mixing A2 alloy powder and reinforcing fibers, and created a single alloy. The idea was to include reinforcing fibers in the powder in advance.
しかしながら、従来の一般的なAff合金粉末の製造法
であるガスアトマイズ法を用いたのでは、Aff合金溶
湯に分散させた強化繊維のためにノズルが目詰まりし、
粉末製造が不可能であることがわかった。However, when using the conventional gas atomization method, which is a common method for manufacturing Aff alloy powder, the nozzle becomes clogged due to reinforcing fibers dispersed in the molten Aff alloy.
Powder production proved impossible.
そこで本発明は、ガスアトマイズ法以外の方法により、
強化繊維を分散させだA2合金溶湯から強化繊維含有A
f!合金粉末の製造方法を提供することを目的とするも
のである。Therefore, the present invention uses a method other than the gas atomization method.
Reinforcing fiber-containing A is made from molten A2 alloy by dispersing reinforcing fibers.
f! The object of the present invention is to provide a method for producing alloy powder.
本発明の強化繊維含有アルミニウム合金粉末の製造方法
は、アルミニウム合金の溶湯にセラミックスのウィスカ
又は短繊維を分散させ、この溶湯に周側面に凹凸部を具
えた回転体の該凹凸部を接触させることにより上記溶湯
を飛散させ、103tZ’/冠以上の冷却速度で凝固さ
せることを特徴とする。The method for producing reinforcing fiber-containing aluminum alloy powder of the present invention includes dispersing ceramic whiskers or short fibers in a molten aluminum alloy, and bringing the molten metal into contact with the uneven portion of a rotating body having an uneven portion on its circumferential surface. The method is characterized in that the molten metal is scattered and solidified at a cooling rate of 103 tZ'/cap or more.
まだ、この方法により得られた本発明の強化繊維含有ア
ルミニウム合金粉末は、セラミックスのウィスカ又は短
繊維を5〜40体積%含有し、直径が−44−3all
以下であることを特徴とする。However, the reinforcing fiber-containing aluminum alloy powder of the present invention obtained by this method contains 5 to 40% by volume of ceramic whiskers or short fibers, and has a diameter of -44-3all.
It is characterized by the following:
本発明で用いるAQ合金に特に制限はなく、例えばA2
−3i合金、A+!−3i−Fe−Ni合金、AR−S
i −Fe −Ni−Cu−Mg合金及びAl!−F
e−Ni−Cr−Mo合金等が使用できる。There are no particular restrictions on the AQ alloy used in the present invention; for example, A2
-3i alloy, A+! -3i-Fe-Ni alloy, AR-S
i-Fe-Ni-Cu-Mg alloy and Al! -F
e-Ni-Cr-Mo alloy etc. can be used.
セラミックスの強化繊維としては、通常使用されている
ウィスカ又は短繊維であってよく、例えばアルミナ、炭
化珪素、グラファイト、チタン酸カリウム等のウィスカ
、及びアルミナ、アルミナシリカ、ジルコニア、炭素等
の短繊維がある。強化繊維の寸法は、ウィスカが一般に
直径0.5〜1μm及び長さ50〜200μm程度であ
り、短繊維が直径0.5〜lOμm及び長さ数jI′1
1以下が一般的である。この長さは製造する粉末の粒径
により制限されるが、溶湯に分散させる前に長さを一定
以下に揃えるか、長めのウィスカや短繊維を用いても溶
湯を攪拌することにより微細化できる。Ceramic reinforcing fibers may be commonly used whiskers or short fibers, such as whiskers of alumina, silicon carbide, graphite, potassium titanate, etc., and short fibers of alumina, alumina-silica, zirconia, carbon, etc. be. The dimensions of the reinforcing fibers are that the whiskers generally have a diameter of 0.5 to 1 μm and the length of about 50 to 200 μm, and the short fibers have a diameter of 0.5 to 10 μm and a length of jI′1.
1 or less is common. This length is limited by the particle size of the powder to be manufactured, but it can be made finer by adjusting the length to a certain level or less before dispersing it into the molten metal, or by stirring the molten metal using longer whiskers or short fibers. .
これらの強化繊維には、AQ合金との濡れ性が悪かった
り、又は炭素のように高温でAeと反応するものもある
ので、必要に応じて高融点金属等の濡れ性を改善する物
質や又はTiC等の反応を防止し得る物質で予め被覆し
ておいてもよい。Some of these reinforcing fibers have poor wettability with AQ alloys, or some, such as carbon, react with Ae at high temperatures, so if necessary, they may be treated with substances that improve wettability, such as high-melting point metals, or It may be coated in advance with a substance that can prevent reaction, such as TiC.
本発明方法においては、ウィスカや短繊維をA2合金溶
湯中に分散させるが、ウィスカ又は短繊維は沈殿するこ
となく均一に分散する。次に、この溶湯を回転するロー
ラやドラム等の凹凸部(例えば歯車状)で飛散させるこ
とにより急冷し、凝固させる。従って、得られる19合
金粉末中にはウィスカ又は短繊維が均一に分散し、その
配向に方向性がなく、組織が微細であるなど、極めて望
ましい状態の粉末が得られる。In the method of the present invention, whiskers and short fibers are dispersed in the molten A2 alloy, but the whiskers and short fibers are uniformly dispersed without precipitation. Next, this molten metal is rapidly cooled and solidified by scattering it on an uneven part (for example, a gear shape) of a rotating roller or drum. Therefore, in the resulting 19 alloy powder, whiskers or short fibers are uniformly dispersed, their orientation is directionless, and the structure is fine, making it possible to obtain a powder in an extremely desirable state.
A1合金粉末中のウィスカ又は短繊維の含有1、に
即ちAR合金溶@セC散させるウィスカ又は短繊維の量
を5〜40体積%とする理由は、5体積%未満では繊維
強化AQ金合金しだとき強度向上の効果がな(,40体
積%をこえても強度向上効果が飽和して不経済であるか
らである。The reason why the content of whiskers or short fibers in the A1 alloy powder is 5 to 40% by volume, that is, the amount of whiskers or short fibers dispersed in the AR alloy melt is 5 to 40% by volume. This is because even if it exceeds 40% by volume, the strength-improving effect is saturated and it is uneconomical.
得られるA2合金粉末の粒径及び収量は、回転体の回転
速度や溶湯中への浸漬深さ、及び回転体の凹凸部の形状
等によって任意にコントロールすることができる。しか
しながら、粉末の粒径は3IIj以下とすべきであり、
これより大きいと1O3C/sec、以上の冷却速度で
凝固させることが困難である。The particle size and yield of the obtained A2 alloy powder can be arbitrarily controlled by the rotational speed of the rotating body, the depth of immersion into the molten metal, the shape of the uneven parts of the rotating body, etc. However, the particle size of the powder should be no more than 3IIj;
If it is larger than this, it is difficult to solidify at a cooling rate of 103C/sec or more.
尚、本発明の強化繊維含有A2合金粉末は、一般の粉末
冶金用原料としてそのまま用いることができ、従来の設
備及び方法によシ繊維強化A9合金を製造することがで
きる。特に熱間鍛造法等による場合には配向がランダム
に、なるので、全方向に強度を要する部品に適するが、
熱間押出法による場合は強化繊維が押出方向に配向する
ので、押出方向に強度を要する部品の製造に適当である
。The reinforcing fiber-containing A2 alloy powder of the present invention can be used as it is as a raw material for general powder metallurgy, and a fiber-reinforced A9 alloy can be produced using conventional equipment and methods. In particular, when hot forging is used, the orientation is random, so it is suitable for parts that require strength in all directions.
In the case of hot extrusion, the reinforcing fibers are oriented in the extrusion direction, so it is suitable for manufacturing parts that require strength in the extrusion direction.
第1表に示す強化繊維をAff合金(2014)の溶湯
に夫々投入し、攪拌して均一に分散させた。The reinforcing fibers shown in Table 1 were respectively introduced into the molten metal of Aff alloy (2014) and stirred to uniformly disperse them.
第1表
130体積% SiCウィスカ (直径0.5 μm長
さ30μm)210体積% Ap203短繊維(直径3
μm長さ200μm )320体積% (
直径3μm長さ200μm)430体積%
(直径3μm長さ訂しm)535体積%
(直径3μm長さ2(6)m)図示するようなカーが
ン製の溶湯容器lに第1表の強化繊維を夫々分散させた
各、!合金溶湯2を入れ、この強化繊維を分散させたA
Q合金溶湯2に、全周側面に歯車状の凹凸部4を有する
回転ドラム3を矢印方向に回転させながら浸漬させ、強
化繊維を分散させたA9合金溶湯2を点線矢印の方向に
飛散させた。この時、回転ドラム3の直径は25cmで
あり、凹凸部4の溝部から頂部までの高さは5nであり
、凹凸部4の頂部の最大浸漬深さは約2nであって、回
転ドラム3の回転速度は5000回転/分であった。飛
散した強化繊維を分散させたA2合金溶湯は約105C
/ sec、の冷却速度で急冷凝固され、平均粒径が約
Q、5a+mの強化繊維含有AQ合金粉末が得られた。Table 1 130 volume% SiC whiskers (diameter 0.5 μm length 30 μm) 210 volume% Ap203 short fibers (diameter 3
μm length 200 μm) 320 volume% (
Diameter 3μm Length 200μm) 430% by volume
(Diameter: 3 μm, length: m) 535 volume%
(Diameter: 3 μm, length: 2 (6) m) The reinforcing fibers listed in Table 1 were dispersed in a carton molten metal container l as shown in the figure. A in which molten alloy 2 was added and the reinforcing fibers were dispersed.
A rotary drum 3 having gear-shaped uneven portions 4 on the entire circumferential side surface was immersed in the Q alloy molten metal 2 while rotating in the direction of the arrow, and the A9 alloy molten metal 2 in which reinforcing fibers were dispersed was scattered in the direction of the dotted arrow. . At this time, the diameter of the rotating drum 3 is 25 cm, the height from the groove to the top of the uneven part 4 is 5n, and the maximum immersion depth of the top of the uneven part 4 is about 2n. The rotation speed was 5000 rpm. The A2 alloy molten metal with dispersed reinforcing fibers is approximately 105C.
AQ alloy powder containing reinforcing fibers with an average particle size of about Q, 5a+m was obtained by rapid solidification at a cooling rate of /sec.
得られた各強化繊維含有A2合金粉末の60メツシユ以
下の粉末を用いて、4tOn/Crn2の圧力で冷間プ
レス成形し、これを500Cの温度及び4 ton/C
m2の圧力で熱間プレスして固化させ、繊維強化A[合
金を製造した。各合金にT6処理を施した後、空隙率及
び室温での引張強度を測定した。Using 60 meshes or less of the obtained reinforcing fiber-containing A2 alloy powder, cold press molding was performed at a pressure of 4 ton/Crn2, and this was then molded at a temperature of 500C and at a pressure of 4 ton/C.
A fiber-reinforced A alloy was produced by hot pressing and solidifying at a pressure of m2. After each alloy was subjected to T6 treatment, the porosity and tensile strength at room temperature were measured.
比較のために、全く同一組成の繊維強化AQ金合金従来
方法に従って製造した。即ち、(a)A、ff合金粉末
と強化繊維をスピードミキサーで1時間乾燥混合した混
合粉末と、(b)A17合金粉末と強化繊維をアセトン
溶媒中で混合後、溶媒を蒸発させた混合粉末とを用いた
以外、上記と同様に処理した。For comparison, fiber-reinforced AQ gold alloys of exactly the same composition were manufactured according to conventional methods. That is, (a) mixed powder obtained by dry mixing A, ff alloy powder and reinforcing fiber in a speed mixer for 1 hour, and (b) mixed powder obtained by mixing A17 alloy powder and reinforcing fiber in an acetone solvent and then evaporating the solvent. The process was carried out in the same manner as above, except that
従来例の各合金についてもT6処理を施した後、空隙率
及び室温での引張強度を測定した。結果を第2表に示し
た。Each conventional alloy was also subjected to T6 treatment, and then its porosity and tensile strength at room temperature were measured. The results are shown in Table 2.
第2表
本発明の強化繊維含有A2合金粉末を用いた繊維強化A
1!合金は、従来のA9合金粉末と強化繊維との混合粉
末を用いて製造した繊維強化A2合金よりも優れた強度
を有することがわかる。Table 2 Fiber reinforcement A using reinforcing fiber-containing A2 alloy powder of the present invention
1! It can be seen that the alloy has superior strength to the fiber-reinforced A2 alloy produced using a conventional mixed powder of A9 alloy powder and reinforcing fibers.
本発明によれば、従来のガスアトマイノ法等におけるノ
ズルの目詰まシ等の製造上の支障なく、あらゆるAe合
今について強化線維を含有させたA2合金粉末を簡単か
つ安価に提供できる。According to the present invention, it is possible to easily and inexpensively provide A2 alloy powder containing reinforcing fibers for all types of Ae composites without any production problems such as nozzle clogging in conventional gas atomino methods.
従って、本発明の強化繊維含有A2合金粉末を使用すれ
ば、通常の粉末冶金法によって、強化繊維が均一に分散
した緻密かつ優れた強度を有する繊維強化A2合金を製
造できる。Therefore, by using the reinforcing fiber-containing A2 alloy powder of the present invention, a fiber-reinforced A2 alloy having uniformly dispersed reinforcing fibers, dense structure, and excellent strength can be produced by ordinary powder metallurgy.
図面は、本発明方法により強化繊維含有A2合金粉末を
製造する装置の一具体例を示す概略断面図である。
1・・・溶湯容器 2・・・AR合金溶湯+強化繊維
3・・・回転ドラム 4・・・凹凸部The drawing is a schematic cross-sectional view showing a specific example of an apparatus for producing reinforcing fiber-containing A2 alloy powder by the method of the present invention. 1... Molten metal container 2... AR alloy molten metal + reinforcing fiber 3... Rotating drum 4... Uneven part
Claims (3)
カ又は短繊維を分散させ、この溶湯に周側面に凹凸部を
具えた回転体の該凹凸部を接触させることにより上記溶
湯を飛散させ、10^3℃/sec.以上の冷却速度で
凝固させることを特徴とする強化繊維含有アルミニウム
合金粉末の製造方法。(1) Ceramic whiskers or short fibers are dispersed in a molten aluminum alloy, and the molten metal is scattered by contacting the molten metal with the uneven parts of a rotating body having an uneven part on its circumferential side, and heated to 10^3°C. /sec. A method for producing reinforcing fiber-containing aluminum alloy powder, which comprises solidifying at a cooling rate of at least 100%.
カ又は短繊維を分散させる請求項(1)記載の強化繊維
含有アルミニウム合金粉末の製造方法。(2) The method for producing reinforcing fiber-containing aluminum alloy powder according to claim (1), wherein 5 to 40% by volume of whiskers or short fibers are dispersed in the molten aluminum alloy.
1)記載の強化繊維含有アルミニウム合金粉末の製造方
法。(3) Claim in which the particle size of the obtained powder is 3 mm or less (
1) The method for producing reinforcing fiber-containing aluminum alloy powder as described above.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5660188A JPH01230705A (en) | 1988-03-10 | 1988-03-10 | Manufacture of reinforced fiber-contained aluminum alloy powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5660188A JPH01230705A (en) | 1988-03-10 | 1988-03-10 | Manufacture of reinforced fiber-contained aluminum alloy powder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01230705A true JPH01230705A (en) | 1989-09-14 |
Family
ID=13031737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5660188A Pending JPH01230705A (en) | 1988-03-10 | 1988-03-10 | Manufacture of reinforced fiber-contained aluminum alloy powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01230705A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5372772A (en) * | 1986-12-01 | 1994-12-13 | Convault, Inc. | Method for entombment of container in concrete |
-
1988
- 1988-03-10 JP JP5660188A patent/JPH01230705A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5372772A (en) * | 1986-12-01 | 1994-12-13 | Convault, Inc. | Method for entombment of container in concrete |
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